Dayton Operating Instructions and Parts Manual | 3WY47, 3W735B, 3W736C, 3WY44, 3TE27A, 3WY45, and 3WY46 |
Dayton® Professional-Duty
Electric Generators
Troubleshooting Chart
NOTE: See engine ownerÕs manual for engine troubleshooting.
Symptom
Only a qualified electrical service
person should service and repair generator. Use only factory approved repair parts.
Possible Cause(s) | Corrective Action |
Engine will not start | 1. Insufficient fuel | 1. Fill tank with fresh fuel |
| 2. Oil level low | 2. Fill engine crankcase with oil to the full |
|
| mark on dip stick |
No voltage when starting generator with no electrical load
1. Defective capacitor | 1. Replace capacitor |
2. Winding short circuit or loose | 2. Check resistance of coils (see ÒElectrical |
connections | Component Specifications,Ó page 2) |
3. Defective rotor diode | 3. Replace both diodes on rotor |
4. Loss of residual magnetism | 4. Apply |
| terminals for |
Voltage is less than normal | 1. Engine speed too low | 1. Set engine speed to 3720 RPM (62 Hz) |
voltage with no electrical load |
| with no load |
| 2. Defective rotor diode | 2. Replace both diodes on rotor |
| 3. Partial short circuit in winding | 3. Check resistance of coils (see ÒElectrical |
|
| Component Specifications,Ó page 2) |
| 4. Defective capacitor | 4. Replace capacitor |
|
|
|
Voltmeter reading more than | Engine speed too high | Set engine speed to 3720 RPM (62 Hz) |
10% high with no electrical |
| with no load |
load |
|
|
Voltmeter reading correct with no electrical load, but more than 10% low when electrical load is added
1. Defective rotor diode | 1. Replace both diodes on rotor |
2. Electrical load too high | 2. Do not overload generator |
3. Engine not running properly | 3. Contact an authorized engine service |
| center |
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